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- Title
Influence of surface pretreatments on the corrosion protection of sol-gel coated AA2024-T3 aluminium alloy.
- Authors
Feng, Z.; Liu, Y.; Hashimoto, T.; Thompson, G. E.; Zhou, X.; Skeldon, P.
- Abstract
In the present study, the effects of surface pretreatments of AA2024 aluminium alloy on the corrosion protection of the alloy using a sol-gel coating were investigated. It was revealed that the second phase particles that remain after etching and desmutting have a significant impact on the subsequent sol-gel coating which, in turn, influences the overall corrosion protection afforded to the substrate by the sol-gel coating. The removal of second phase particles in the surface region can be achieved by an alternative surface pretreatment using nitric acid. A significant improvement of corrosion protection of sol-gel coated AA2024 aluminium alloy was observed when the surface of the alloy was pretreated with nitric acid. Copyright © 2013 John Wiley & Sons, Ltd.
- Subjects
SURFACE coatings; ALUMINUM alloys; ALKALINE earth compounds; ETCHING; CORROSION &; anti-corrosives
- Publication
Surface & Interface Analysis: SIA, 2013, Vol 45, Issue 10, p1452
- ISSN
0142-2421
- Publication type
Article
- DOI
10.1002/sia.5216